Point-Source Nutrient Loads to Streams of the Conterminous United States, 2012

The U.S. Geological Survey (USGS) developed a spatial water-quality model called SPAtially Referenced Regressions On Watershed attributes (SPARROW) to estimate the major sources and environmental factors that affect the long-term supply, transport, and fate of contaminants in the Nation’s streams. The SPARROW model relates in-stream water-quality data to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and aquatic transport. Based on SPARROW modeling, one of the main nutrient sources to streams is point-source facilities such as municipal waste-water treatment plants that discharge directly to streams. This dataset was developed to assist with...

Categories: Data; Tags: Alabama, Arizona, Arkansas, California, Colorado, All tags... Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, National Hydrography Dataset, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, SPAtially Referenced Regressions On Watershed attributes (SPARROW), South Carolina, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), Utah, Vermont, Virginia, Washington, Water Quality, West Virginia, Wisconsin, Wyoming, aquaculture, contamination and pollution, environment, improvement of scientific data usability, nutrient content, utilitiesCommunication, waste treatment and disposal, wastewater discharge, Fewer tags

Stage, water velocity and water quality data collected in the Lower Nisqually River, McAllister Creek and tidal channels of the Nisqually River Delta, Thurston County, Washington, February 11, 2016 to September 18, 2017 (ver. 1.1, December, 2019)

This data release includes time series data of stage, water velocity and water quality parameters at multiple locations in the tidally-influenced reaches of the Nisqually River and McAllister Creek, and tidal channels of the Nisqually River Delta. In total, time series data were collected at multiple sites from February 11, 2016 to March 19, 2018 during separate but generally overlapping periods over a range of tidal and hydrologic conditions for augmenting hydrodynamic models that will be used to inform river delta restoration alternatives. Time series data were collected at 10 sites in the study area: 3 sites in the lower Nisqually River, defined here as the tidally-influenced reach downstream from Mounts Road;...

Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: USGS Science Data Catalog (SDC)

Radon data and time-lapse photos collected outside the Pinenut uranium mine, Arizona, 2015-16

Two Saphymo AlphaE radon (Rn) detectors, with a measurement range of 0.54 picoCuries per liter of air (pCi/L) to 270 nanoCuries per liter of air (nCi/L), were deployed from October 2015 thru May 2016 in publicly accessible areas adjacent to the Pinenut uranium mine located in northern Arizona. One monitor was installed in close proximity to the mine vent and a second monitor was installed in close proximity to the ore pile. In late December 2015, a third AlphaE Rn detector was deployed adjacent to the ore-pile monitor. Measurement frequency was 3 times per hour and a time-lapse camera was installed in close proximity to the ore pile to record relative size and activity of the ore pile during mining and early reclamation....

Categories: Data; Tags: Energy Resources, Environmental Health, Geochemistry, Grand Canyon National Park, USGS Science Data Catalog (SDC), All tags... radioactivity, radon, uranium mining, Fewer tags